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(No Model.) 3 Sheets-Sheet 1.

' G. H. GORLISS, Deod.

E. A. Gonmss, Administratrix. MACHINE FOR FINISHING THE ENDS 0F CYLINDERS 0F STEAM ENGINES.

110,450,398. Patented Apr. 14,1891.

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E. A. CORLISS,Adl111'l1iStTatIiX. I MACHINE FOR FINISHING .THE ENDS 0E CYLINDERS 0P STEAM ENGINES.

No. 450,398. Patented Apr. 14,1891.

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G. H. OOR'LISS, Deod.

E. A. GORLISS, Adminis'gmtrix. MACHINE FOR'FINISHING' THE ENDS 0F CYLINDERS 0F STEAM ENGINES.-

No. 450,398. Patented Apr. 14,1891.

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' UNITED STATES PATENT Orr cn.

EMILY A. OORLISS, OF PROVIDENCE, Rl-I O'DE ISLAND, ADMINISTRATRIX OF GEORGE H. CORLISS, DECEASED.

MACHINE FOR FINISHING THE ENDS OF CYLINDERS OF STEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 450,398, dated April 14, 1891. Application filed December 18, i889. Renewed November 6 1890. Serial No. 370,449. (No model.)

T0 at whom it may concern.-

Be it known that GEORGE H. OORLISS, de

ceased, late a citizen of the United States,

resident in the city and county of Providence, in the State of Rhode Island, (represented by EMILY A. CORLISS, administratrix,) invented a new and useful Machine for Finishing the Ends of Cylinders of Steam-Engines by Facing, Boring, Counterboring, Drilling, and Tapping the Same, of which the following is a specification.

The said GEORGE H. CORLISS has embodied in one machine mechanisms for performing at a single setting and adjustment of the cylinder the several operations of facing, boring, counterboring, drilling, and tapping the ends of the cylinder, all arranged and adapted for contemporaneous or independent action relatively each to the other, with provision made for supporting the cylinder in the correct line and maintaining its adjustment during the several operations performed upon it, and other provision for varying the relative adjustment of parts of the machine, whereby it is adapted to operate upon cylinders of different dimensions.

Prior to this invention of said GEORGE H. OORLISS it had been customary to employ three machines in finishing the ends of cyl-' and adjust the cylinder at least twice for each machine, and the greatest care was requisite to adjust the cylinder in the proper position for each machine. The size and weight of the cylinders involved labor in the moving,-.

setting, and adjusting them for each machine, and their proper adjustment was a matter volvin g time and careful skill when the separate machines were employed in finishing the ends.

WVith the invention herein entire work can be performed on a single ma chine with a single handling'and adj ustlnent" of the cylinder-casting with ease and exactness. The tools being true, all the operations described the.

are performed so exactly as to insure perfect interchangeability of all cylinders of the same size operated upon and finished in this machine. Upon a stationary plane bed are gibbed two housings arranged in line with each other and movable longitudinally of said bed for purposes of adjustment and also for automatic endwise feed of theboring and counterboring tools, which latter, in common with the facing and drilling and tapping tools, are held in rests arranged in a tool-carriage radi ally movable in the face of a head secured upon a horizontal hollow shaft which has its bearings in the housing above mentioned. Automatic radial movement of the tool-carriage in the head is secured, to feed the facing-tool radially, by a star-wheel arranged to actuate a threaded shaft contained within the head by striking at each revolution of the head against a spring pin or stop attached to the housing in the orbit of the star-Wheel. The facing, boring, and counterboring tools, seated in their respective toolrests, are operated by the revolution of the head. The facing-tool is fed automatically, as already described, and endwise feed of the boring and counter-boring tools is attained by automatically moving the housing longiand taps are fed by the common hand-wheelattached 't'o their spindle.

In the operations of drilling and tapping the stud-holes in the end of the cylinder, the head is held stationary by means of a pawl,

uwhich is caused to engage the appropriate index-hole in the peripheral face of the head.

here are a number of these index-holes aranged in the peripheral face of the head in aipredeterirrined position and order. After a stud-hole has been drilled and tapped the pa'wl isdisengaged and the head then partially revolved to bring the tools into the proper position to drill and tap the next studhole in the end of the cylinder. The pawlis then caused to engage the proper index-hole, and the stud-hole is then drilled and tapped.

These operations are repeated until all the.

stud-holes have been drilled and tapped.

The cylinder is supported and centered in this machine by jigs secured removab1.ynpon the plane-bed of the machine between the heads of which there are two located in line The jigs are also boltedto with each other. the bottoms of the exhaust-valve bo'xes'of the cylinder, which latter have been previously prepared in another machine.

responding size of cylinder.

cylinder. der has its appropriate jigs.

In the accompanying drawings, Figure 1 is:

a side elevation of the machine with a cyli der in position, a portion of the latter being;

broken away. Fig. 2 is a top plan of the satire. I Fig. 3 is a side elevation ofone end of then'iachine. Fig.4: is a top plan, and Fig. 5an end.

elevation, of same.

Fig. 6 is a side elevation of one of the revolving heads, with its toolcarriage, a portion of the bed, housing, ho-l-.

low shaft, and internal shaft'being also shown. 1 Fig. 7 is a face elevation of the head and tool-:

carriage, a portion of the housing and a transi verse section of the bed being'shown. ,Fig.

8 is a sectional View of the head, too'l-carriage,. and hollow shaft, on line a: to of Fig. 7,sho 'w ing also the internal shafts which operate-the; drill-spindle and the star feed device "for raw dially moving the carriage.

Similar letters of reference indicate like, parts where they occur in the drawings. j

A represents the stationary bed, andA' A the housings gibbed thereon andniovable lo'n-' gitudinally along the same for purposes of. adjustment and for endwise feed of the bot-z ing and counterboring tools by the feed-screw; A actuated by the hand wheel A or auto-1 matically by power applied to said feed-screw through a system of gears and shafting. B B are the heads mounted on hollow shafts B B, journaled in the housings A AC,

O is the tool-carriage, with tool-rests c 0 b and drill-chuck c v The threaded shaft 0 star-wheel c, and spring-pin serve to move the ca'rriageG radially in the head B, and thereby automati-i cally feed the facing-tool as'the head 3B re; volves. The carriage O is also movable-radially in the head for purposes of adjustment by turning the threaded shaft c by means of. a crank-handle or wrench applied to theouter end of said shaft, which is suitably squared or otherwise fitted to receive the wrench.

The head B is secured upon the hollows'haft" B and revolves therewith during the opera-- tions of facing, boring, and counterbori'ng the ends of the cylinder M, as driven by'power conveyed from the vertical driving shaft'D, through the bevel-gears d d, pinion (1*, gear the well-known hand-wheelc d counter-shaft d, and pinion d meshed into. the gear B keyed upon the hollow shaft B.

The boring and counterboring tools are automatically fed endwise by power applied to the vertical driving-shaft F and through a train of gearing to the feed-screw A to move the housing A along the bed A. Automatic cndwise movement of the housing A along the bed A may also be attained by means of paw'la','whic'h can be made to engage a ratchet on the outer end of the feed-screw A and operated by a toggle arm or link a, cocentrically secured upon the outer end of the counter-shaft (1 the power beingin that case taken from the vertical driving-shaft D and not from the shaft F.

Within the hollow shaft B and in-the'ax'ial line thereof is'a shaft 1), on the outer end of which is keyed agear B and connected at its other end by a system of bevel-gears and ishaftingall contained within the head B, with a drill-spindle held parallel with the 'faxial line of {the head and at any distance therefrorna'nd in any part of the circle.

During the operations of drilling and taplping a stud-hole in the end of the cylinder *thehead B and carriage G are prevented from revolving by-a "pawl 19, which is made to engage one of a number of index-holes arranged in predetermined positions in the peripheral face of the head B. The drill and taps'a-re "rotated by ipojwe'r conveyed from the, vertical driving-shaft E,-through bevel-gears e e,=gear 'e gpinion e counter-shaft c and a pinion e to thegear Bikeyed'upon the shaft 6. Endwise feed of the drill and tapsis attained by hole in'the end of the cylinder has been drilled and tapped the pawl is disengaged and the head revolved 'sufliciently to bring the tool into the proper position to drill the next hole, when thepawl is made to engage the proper index-hole in thehead tohold the latter immovable during the operations of drilling and tappingthe hole in the end of the cylinder.

These operations are repeated until all the hole's 'in-th'e end'of the cylinder have been drilled andthreaded.

The facing, boring, and counterboring tools arecarried, respectivelyfln the tool-rests c 3 0 in theyc'arriage O and the drill and tappin-g tools inthe spindle or chuck seated in the rest 0 insaid carriage. Eachof the vertical driving-shafts D, E, and F is'connected at its upper end to its appropriate system of gearsandpulleys,-from which it receives the power, and which areeach provided with its appropriate means for starting and stopping it at will.

The parts which have been described herein are duplicated and arranged on a common bed whereby the several operations are performed simultaneously upon each end of the cylinder, except in'the case of the boring and counterbori-ng. The open end of the cylin- After a studder is counterbored and the closed or pis- 4 carrying tools arranged for alternate action,

ton-rod packing-box end is bored. The cylinder is supported and centered by the jigs J J, which rest upon the plane table or bed A, and are held in the correct line laterally by bolts inserted through holes in the jigs into previously-determined holes in said table. Otherbolts inserted through previouslyfitted holes in the bottoms of the exhaust-valve boxes, which have been previously prepared and fitted upon another machine, (described and claimed in another application for Letters Patent, filed December 16, 1889, Serial No. 333,858,) serve to accurately center the cylinder. One of these bolts is shown at n in Fig. 1. These jigs J are of a height corresponding to the diameter of the cylinder being treated, so as to bring the center line of the cylinder in line with the axes of the revolving heads B B. The cylinder once centered in this machine is not removed nor its adjustment changed in any manner until the two ends have been entirely finished. Without counting repetitions, there are four distinct and separate operations performed by this machine upon each end of the cylinder at a single adjustment of the latter.

Any of the. tool-rests c, 0 or a may be used at will to hold a suitable tool for facing or boring or counterboring; but there is an advantage in having the three arranged as shown, as it avoids the necessity for moving the carriage C, in changing from one jib to the other, the tool-rest 0 being used for counterboring the large end of the cylinder, the tool-rest 0 being used for boring the small hole in the closed end of the cylinder, and the intermediate tool-rest'c being used when convenient for facing.

I claim as the invention of said GEORGE H. OoRLIss and desire to secure by these Letters Patent- 1. In a machine for finishing the ends of steam-engine cylinders and analogous castings, a head B, hollow shaft B, and a toolpost and a drill-chuck, each movable radially in such head, and gearing independently operated by a shaft b within the hollow shaft B for rotating such drill-chuck, in combination with each other and with mechanism for automatically traversing the whole longitudinally to provide for boring and counterboring, substantially as herein specified.

2. In a machine for finishing steam-engine cylinders and analogous castings, the single tool-carriage 0, having one or more tool-rests and a drill-chuck mounted therein, carried on a head B, fixed on a hollow shaft B, in combination therewith and with the feed-screw A and means for operating it to give a feed movement to the carriage, and with a threaded shaft 0 and means for operating it to DIOXB such carriage radially on the head, as herein specified.

3. The hollow shaft B, head B, mounted thereon, and mechanism for rotating the two, a tool-carriage (J, equipped with two or more tool-rests c c 0 and a drill-chuckcfl each means for traversing such carriage radially in such head automatically and at will, and other means for operating such drill-chuck at any'distance from the axis of the head B and in any part of .the circle by mechanism contained within such head and connecting with the shaft 12, contained within the hollow shaft B, all combined with each other and with a housing A, and mechanism for feeding such housing and its connections longitudinally at will and automatically, and all arranged to serve substantially as specified.

4. In a machine for finishing steam-engine cylinders and analogous castings, the housing A and mechanism for feeding it longitudi .nally, the hollow shaft B and head B, carried on such housing, the head having a radial way w 'w, the carriage C, carrying one or more tool-rests c c c and also a drillfchuck c mechanism for automatically feeding such carriage radially on the head, mechanism for,

revolving the shaft B, mechanism for revolving the drill-chuck 0 held parallel to the axis of the head and at any distance therefrom and in any part of the circle, and shafts D and E, extending up and down, connecting the shaft B and the drill-chuck 0 respectively, with gears arranged overhead and driven by power and provided with means for controlling their action at will, all combined and arranged for joint operation substantially as herein specified.

5. In a machine for finishing steam-engine cylinders and analogous castings, having the housing A and mechanism for feeding it longitudinally, a hollow shaft B and a head B, carried on such housing, a carriage O, carrying the tool-rests and .also a drill-chuck, and mechanism for operating either at will and for feeding each automatically at will, in combination with each other and with three vertical shafts D, E, and F, with separately-controlled driving-gears mounted overhead and separate trains of gears below for each, connected as shown, so that one shaft shall at will revolve the hollow shaft B and its connections, another shaft shall at will revolve the drill-chuck, and a third shall at will move the housing A, carrying such hollowshaft B and its connections longitudinally, all substantially as herein specified.

6. A machine for finishing the ends of cylinders of steam-engines and analogous castings, the same consisting of the following ele-.

IIO

described, and adapted to serve, as specified, to accurately finish both ends of a cylinder at a single setting and adjustment of the latter. I 5 In testimony whereof I hereunto set my hand in presence of two subscribing Witnesses.

EMILY A. CORLISS, Admtntstmtrtx of the estate of George H 001" M83, deceased.

Witnesses:

HENRY llIARSH, J r., MARIA L. CoRLIss.

and said drill-chuck and its tool being held parallel with the axis of such head and combined with means for operating the tool at any distance from such axis and in any part of the circle, means for revolving the drillchuck at will, means for revolving the'hollow shaft B and its connections at will, and other means for moving each housing and its connections longitudinally at will and automatically, and jigs adapted to serve, as described, to center and hold the cylinder in the correct line, all arranged substantially as shown and l 

